The GLC has a luxurious appearance befitting a premium manufacturer. The screened cabins you criticized look more luxurious than the IX3. It's nothing more than a Tesla with a styling update. You know that too. Your disappointment will come out later...
So iX3 is not worthy of being a premium manufacturer product? Yikes

.
As an i5 owner we are extremely with our electric BMW. Luxurious, comfortable and intuitive. It does look funny just randomly commenting about modern BMW’s without even experiencing them.
Just to let you know, before we got the i5, we also checked the new E-Class, and also the EQE. Both of two left us extremely underwhelmed, especially the latter. So much plastic stuff, trim sound everywhere. It “just” looks good. So much chrome, wood and bits of plastic to cover up how mediocre the quality is. BMW is consistent with their interior quality, at least has been consistent until the new X3. Everyone said the new 5er had a bad interior quality too but it was so much better than the main rivals, which ended up being our new daily.
So, commenting not only about the brand but also about my personal thoughts, and saying “your disappointment will come later” is so funny to me, because it won’t.
Maybe try these cars out at the dealers and check some of the bits, since you can’t truly experience them on a daily basis.
